Watford 3-3 Liverpool

“If we have problems at set-pieces then I can't change us talking about it. We defended most of them okay but in the end is it enough if you concede a goal? No.

“The first goal, in our specific situation people will say 'oh dear, set-piece' but it was a good cross and it was a good run. One of our players (Roberto Firmino) didn't close the gap so (Okaka) coudn't run on to it. We have to work on it, no doubt.

“For us, different things were important today. Physicality, at the beginning, not being ready.

“That can happen on a first matchday. We had no direction in the first half but were much better in the second half.

“We have a lot of things we can work on. I saw a lot of good things, but now we have to prepare for the next game.

“If you do everything perfect on the first match day then that makes no sense.

“We will try to work on it, of course. Everything is different in a league game than a pre-season game, of course.”

No team conceded more Premier League goals from set-pieces than Watford last season, and Liverpool almost struck twice from corners in the second half with Joel Matip hitting the bar and Dejan Lovren soliciting a fine save from Hornets goalkeeper Heurelho Gomes.

“We had our own good chances from set-pieces and they were lucky, and we were extremely unlucky,” said Klopp.

“Now they have no problems with set-pieces and we have big problems? I'm not sure.

“But we have to work on it.”

Firmino levelled 10 minutes after the break from the spot after Salah had been fouled by Gomes, and two minutes later provided the chip from which the Egyptian scored his first goal since his club record move from Roma in the summer.